Firearm dust cover



FIG. 1 is a front view of the firearm dust cover, showing my new design;

FIG. 2 is a top-front perspective view thereof;

FIG. 3 is a left side view thereof, the right side being a mirror image;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a top-rear perspective view thereof.

The broken line in the drawings depicts unclaimed portion of the dust cover only and forms no part of the claimed design. 

CLAIM I claim the ornamental design for a firearm dust cover, as shown and described. 